title: Influence of short range potential on field induced chain aggregation in low density dipolar particles.
abstract: We investigate, by Monte Carlo simulation, the effect of the steepness of the short range repulsive potential on mesostructure formation in dipolar particles submitted to a strong external field. Columnar clusters made of several dipolar chains are only observed when the short-range potential is sufficiently steep. The confinement of the dipolar liquid in a slit geometry instead of bulk conditions suppresses the formation of columns.
authors.affiliation: Laboratoire des Matériaux Mésoscopiques et Nanométriques, U.M.R. C.N.R.S. 7070, Université Pierre et Marie Curie (Paris VI), BP. 52, 4, place Jussieu, 75230 Paris Cedex 05, France. richardi@sri.jussieu.fr
authors.forename: J
authors.initials: J
authors.lastname: Richardi
authors.forename: J-J
authors.initials: JJ
authors.lastname: Weis